Carbureter.



' G. M. SCHEBLER.

GARBUBETBR.

PPLIaATIoN FILED 111x121, 1912.

Patented Aug. 25, 1914 'UNITED STATES PATENT OFFICE.

GEORGE M. scIIEBLEIz., 'or INDIANAPOLIS, INDIANA, .A ss'IeNoIz. To mNII IL WHEELER, or INDIANAPOLIS, INDIANA.

CARBURETER.

Specification of Letters Patent.

Patented Aug. 25, 1914;

To all whoml 'it may concern.'

Be it known that I, GEORGE M. SCHEBLER, a citizen of the United States, residing at Indianapolis` in the county of Marion and State of Indiana, have invented a new and useful Carbureter, of which the following is a specification.

The object of my invention is to provide a carbureter capable of delivering various volumes of carbureted air of substantially uniform quality. The accompanying drawings illustrate my invention.

I igure 1 is a vertical axial section, and Fig. 2 a horizontal section o-n line 22 of Fi 1.

n the drawings, 10 indicates the main body ofthe carbureter provided with a horizontal flange 11 and a depending tubular stem 12 through which a primary air inlet passage 13 is formed. The stem 12 near its lowerend is provided with acircumferential liange 14 and the lower end lis projected through an opening 15 in thebottornof the reservoirbowl 16, a packing 17 being introduced between the bottom of the bowl and the flange 14, and a nut. 1S serving to clamp the bowlirf placeupon the stem 12 and to bring the upper end of the bowl into contact with the lower face of the flange 1 1. A primary air supply passage 19 is interposed between nut 18 and the bottom of bowl 16, as shown.

In the lower end ot stem 1 2 is formed a fuelsump 21, the lower end of which is closed by a removable plug 227 and this sump issupplied with fuel through passages 23 which extend through the wallof `stem 12. Above the lower ends of the supply passage 23 isa partition 24 which is bored and threaded to receive the fueln'ozzle 25 which pro'ects upwardly into the riinar' air as sage 13.1 This nozzle might be yprovided with a, needle valve projected downwardly through sump 21 and plug 22 but I prefer to properly proportion the outlet of nozzle' 25 relative to the cross section of assage 13 so as to insure aproper mixture o fuel and air within this tube without the necessity of anad'ustable valve.

In act it is one of the objects of my in vention to produce a carbureter structure which, so far as the fuel nozzles are concerned, may be properly proportioned in the factory and so that thlsproper proportioning cannot be interfered with by Persons throttle valve 27.

Leading into the s ide of the passage 26 above the delivery end of passage 13 are several supplementary mixture delivery passages 28, each of which discharges `from a valve chamber 29. Delivering into each valve chamber 29 is a supplemental air vinlet passage 31,- a valve seat 32 being` interposed between each passage 31 and its adjacent chamber 29. Arranged adjacent each valve seat 32 is-asupplementary delivery.` nozzle 33 which .is connected -to atube 34, the lower end of which depends into the bowl 16 a suthcient distance to be constantly submerged by the fuel within the bowl convenientand desirable that the nozzles 33 `be materially above the normal level offiiel within bowl 16, the bores of tubes 34 areso proportioned as to have sucient capillary attraction for the fuel to permit a normal maintenance vof fuel level .substantially at the delivery end of nozzle 33. Seated upon each valve seat 32 is a valve 35 which is held toits seat by a spring 36,' the force of which upon the valve may be readily adjusted `by means of a screw plu abutment 37 threaded into the ou'ter end 0% chamber 29 and held in adjusted position by means of anspring detent 38. Each plug 37 is axially -boredat 39 to forma guide and holder for the stem of the adjacentvalve 35.

' The main bodylO is 'providedwith sec; ondary air supply passage 4 1 Jwhicliuleads into passage 26 above the delivery endof passage 13 and substantiallvopposite the supplemental passages 28. The Inlet end of passage v41 is provided with a valve seat42 upon which is seated inwardly opening valve 43 yieldingly held tp its seat by a spring 4 4 which abuts a ainst a collar. 4,5

sleeved upon a pin 46 w ich is by into the axial bore 47 of valve 43. The nor-- mal effect of spring 44 is such that the valve 51 in the main body 10 and provide it at its inner end with a crank pin 52 carrying a roller 53 which roller engages collar 45 in such manner as to shift it axially upon pin 46 andl thus vary the compression of spring 44.I Shaft 51 may be rocked by any suitable means, as through a lever 54 carried upon its outer end.

In practice, the several abutments 37 will be individually adjusted so that, as the speed of the engine increases, and the demand upon the mixture passage 26 correspondingly increases, the valves will yield successively from their seats so that the supply of fuel mixture will be successively augmented automatically, each carbureting unit, however, `operating; in a fixed and uniform manner.

By the arrangementshown, I have sucv ceeded in producing a multi-unit carbureter .which is very compact and practically no larger than the single unit carbureters now commonly in use. The level of fuel within the'bowl 16 will be normally and automatically maintained in the usual manner by means of a float 55 controlling a supply valve in the inlet structure 56.

In order to guard the inlet ends of passages l15 and tube 34, I surround them by a screen 61.

I claim as my invention: l

1. In a carbureter, the combination with a main body having a mixture outlet, a fuel reservoir, a primary carbureting unit-comprising, a 4fuel ,nozzle and an air inlet pasgeA delivering to the mixture outlet, and l ne or more supplemental carbureting units each comprising a supplemental air inlet passage, a mixture `passage delivering to the Imixture passage of the main body, a v alve aiiraned between the supplemental air. inlet land t e adjacent mixture chamber, a fuel -plozzle having its dischargeend in the supemental air inlet passage materially above j, e normal fuel level in the main body and |above the fuel nozzle of the primary carbuirter unit audits receiving end connected to tuelfuel reservoir by a capill the main body 10 and projected upwardly reservoir and arranged inlet; a supplemental fuel nozz arytube, and an museau independently adjustable spring acting to -normally hold the valve closed. v

I2. In a carbureter, the combination with a main body having a mixture outlet, a fuel,

reservoir, a primary carbureting unit comprising a fuel nozzle and an air inlet passage delivering to the mixture outlet, and One 0I each" comprising a supplemental air inlet passage, a mixture passage delivering to the mixture passage of the main body, a valve arranged between the supplemental airinlet and the adjacent mixture chamber,

more supplemental carbureting units a fuel nozzle having its discharge end in the supplemental air inlet passage, materially above the normal fuel level in the main body and above the fuel nozzle of the primary carbureter unit and its receiving end connected to the fuel reservoir, means being provided for maintainin the normal fuel level in the sup lemental uel nozzle higher than that in t e fuel nozzle of the primary carbureter unit, and an independentl adjustable s ring acting to normally hold t e valve close 3. A carbureter com arising a main body having a -mixture cham ondary valve-controlled airinlet, a primary air inlet, and one or more supplemental mixture inlets. discharging into the main mixture chamber and each provided with a supplemental air inlet; a by the main body; a primary fuel nozzle communicating with the fuel reservoir and arranged in the primary air inlet; a supplemental fuel nozzle arranged in each supplemental air inlet materially above the normal fuel level in the main body and above the primary fuel nozzle and communicating with the fuel reservoir, means being provided for maintainin the normal fuel level in the supplemental uel nozzle higher than that in the primary fuel nozzle; a valve arranged between each supplemental air inlet land. the communicating sup and a spring norma its seat.

' 4. A carbureter comprising a main body having a mixture chamber and outlet, a primary air inlet, ,and one or more supplemental mixture inlets discharging into-the main mixture chamber 'and each provided with a supplemental air inlet; a fuel l reservoir carried by the main body; a primary fuel nozzle communicating with 'the fuel in the rimary air e arranged in each supplemental air inlet materially above the normal fuel level in the main body and above the primary fuel nozzle and communicating with the fuel reservoir, means being provided for maintainin the normal fuel level in the supplements;J fuel nozzle higher-than that in t e primary fuelnozzle;

ly holding said valve to er and outlet, a secuel reservoir carried i lemental mixture inlet,

a valve arranged between each supplemental -air inlet and the communicating supplemental mixture inlet, and a spring normally holding said valve to its seat.

5. il carbureter comprising a main body having a main mixture chamber and outlet, a depending tubular stem arranged in substantial alinement with said main mixture chamber in cenmnunicationy therewith and foiming a primary air inlet, and one or more supplemental mixture passages each communicating with the main mixture chamber and each communicating with a supplemental air inlet; a fuel reservoir sleeved over the depending tubular stem; a primary fuelnozzle arranged in the primary air inlet and communicating with the fuel reservoir; one or more supplemental fuel nozzles each arranged in a supplemental air inlet over the fuel reservoir and at a higher level than the primary fuel nozzle and communicating with the fuel reservoir through a capillary tube; one or more valves each arranged to normally close. communication between a supplemental air inlet and the connected supplemental mixture passage; one or more springs each acting upon one of said valves to normally close the same, and an independently adjustable abutment for each of said springs.

6. ffl-carbureter comprising a main body having a main mixture chamber and outlet,

a' tubular stem arranged in substantial alinement with said main mixture chamber in communication therewith and forming a primary airinlet, and one or more supplemental mixture passages each communicating with the main mixture chamber and each communicating with a supplemental air inlet; a fuel reservoir; a primary fuel nozzle arranged in the primaryair inlet and communicating with the fuel reservoir; one or more supplemental fuel nozzles each arranged in a supplemental air inlet over the fuel reservoir and at a higher level than the primary fuel nozzle and communicating with the fuel reservoir through a capillary tube; one or more valves each arranged to normally close communication between 'a supplemental air inlet and the connected i supplemental mixture passage; one or more springs each acting upon one of said valves to normally close the same,'and'an independently adjustable abutment for each of said springs.

7. A carbureter comprising a main body having a main mixture chamber and outlet,

a depending tubular stem arranged in substantial alinenient with said main mixture chamber in communication therewith and forming a primary air inlet, and one or more supplemental mixture passages each communicating with the main mixture chamber and each communicating with va supplemental air finlet; a fuel reservoir sleeved over the depending tubular stem; a primary fuel nozzle arranged in the primary air inlet and communicating with the fuel reservoir; one or more supplemental fuel nozzles each arranged in a supplemental air inlet at a point higher than the primary fuel nozzle and communicating with the fuel reservoir, means .being provided for maintaining the normal fuel level in said supplemental fuel nozzles higher than that in said primary fuel nozzle; one or more valves each arranged to normally close communication between a supplemental air inlet and the connected supplemental mixture passage; one or more springs each acting upon one of said valves to normally close the same, and an independently adjustable abutment for each of said springs.

8. .A carbureter comprising a main body having a main mixture chamber and outlet, a tubular stem arranged in substantial alinenie-nt with said main mixture chamber in communication therewith and formingA a primary air inlet, and one or more supplemental mixture passages each communica-ting with the main mixture chamber and each communicating with a supplemental air inlet; a fuel reservoir; a primary fuel nozzle arranged in the primary air inlet and communicating with the fuel reservoir; one or more supplemental fuel nozzles each arranged in a supplemental air inlet at a point higher than the primary fuel nozzle and communicating with the fuel reservo-ir, means being provided for maintaining the normal fuel level in sa-id supplemental fuel nozzles higher than that in said primary fuel nozzle; one or more valves each arranged to normally close communication between a supplemental air inlet and the conor more springs each acting upon one of .said valves to normally close the saine, and

an independently adjustable abutment for each of said springs.

9. In a carbureter, the combination of a main body having a mixture outlet, a fuel reservoir, a primary carbureting unit comprising a fuel nozzle and an air inlet passage delivering to the :mixture outlet, and a plurality of supplemental carbureter units veach comprising an air inlet passage, a mixture passage delivering to the mixture outlet 'of the main body, a valve arranged between the supplemental air inlet and the adjacent mix,- ture passage, a fuel nozzle having its fdis.

-iio

charge end in the supplemental air inlet I passage at a level materiallyl above the fuel level in the reservoir and the fuel --nozzle of theV primary carbureter unit* and vits lreceiving end connected to the fuel reservoir di modale by a capillari7 tube, and an adjustable spring this 18th day of March, A. D. one thousand acting` to hold` the valve closed, the springs nine hundred and twelve.

of the several supplemental carbureter units s being adjusted so that their associated valves (IEURGE M' SCHEBLER [L' S'] 5 require di'erent' suctions to open them. Witnesses:

In Witness whereof, I, have hereunto set FRANK A. FAHLE,

my hand and seal at Indianapolis, Indiana, MAY LAYDEN. 

